Elbow and pipe.



.lll. |||||||||I No. 706,888. Patented Aug. I2, I902.

H. K. BLYTH. ELBOW AND PIPE. (Application filed Nov. 6, 1901.)

(no Model.)

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UNITED STAES HERBERT K. BLYTH, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO ROBERT L. NELSON, OF CHICAGO, ILLINOIS.

ELBOW AND PIPE.

SPECIFICATION forming part of Letters Patent No. 706,888, dated August 12, 15902.

Application filed llovcmher 6, 1901. Serial No 81302. (No model.)

To all whom, it may concern: The sections C of the elbow are made in the Be it known that I, HERBERT K. BLYTH, a form of segments, each having a long side a citizen of the United States, residing in Chiand a short side These segments and the cago, in the county of Cook and State of Illilocking-section are revolubly attached one to 5 nois, have invented certain new and useful the other by means of companion beads D Improvements in Elbows and Pipes, of which and D, so formed that the free ends d and d the following is a specification. will revolve within the grooves formed by the The object of this invention is to produce a beads and allow the segments to be turned to pipe the sections of whichmay be locked or any desired position in relation to one an- 1o fastened together and an elbow so constructother. Vhen it isdesirable to employ the ed that it may be locked into the pipe and at elbow to form a right-angle joint between segthe same time may be turned or adjusted to meu'ts of pipe, thejsegments composing the any suitable angle of curvature without unelbow are so turnedthat their short sides will looking it from the pipe. Moreover, these be in line on theinside of the elbow and their I5 desirable results may be obtained without inlong sides will be in line on the outside of the creasing the complexity or cost of the pipe elbow, thereby formingthe angle, as shown in and elbow and without necessitating the em- Fig. 1. By varying the relative position of ployment of new or unusual tools in their conthe short sides and long sides of the segments struction. it is possible to adjust the elbow to any de- 20 In the drawings illustrating the invention, sired angle of curvature, or itmay be entirely Figure 1 is a side elevation of a section of pipe straightened, as shown in Fig. 2 by alternatwith the elbow attached by means 06 an ening the long and short sides of the segments. tering lock-section and adjusted to form a The locking section or thimble is made cylinright-angle joint; Fig. 2, a sectional view of drieal in order that the connection between 25 the elbow inits straightened position with it and the adjoining segment of the elbow the locking-section revolubly'attaehed; and may allow the elbow to be revolved in a true Fig. 3, a sectional View of a portion of the circle, thereby enabling it to be turned in any pipe with the locking-section attached, showdirection when so desired without changing ing the method of interlocking employed. its angle of curvature. This arrangement 30 As constructed, A represents a section of enables the locking-section tobe locked to pipe, and B the elbow attached thereto. The the pipe and still permits the elbow to be pipe is preferably provided with a bead a, turned to any desired direction with or withwhich forms a suitable contact for the lockout varying in its angle of curvature and ing section or thimble carried by the elbow, without unlockingit from the pipe, thereby 35 as shown in Fig. 1. The section of pipe, as aifording greater rigidity and permanence shown in Fig. 3, is provided at its end with an than is possible icy-merely slipping the elbow L-shaped slot a. into the section of pipe, as in ordinary eon- The locking section or thimble b is cylinstruction. drical in shape, for a reason to be hereinafter Although the ordinary Stovepipe shown, 4o explained. This locking-section is provided made out of thin sheet metal, has been emwith a pin 12, engaging with the slot in the ployed for purposes of description and illusend of the section of pipe and forming theretration, it is plain that the invention is not with a bayonet-joint. It is usually desirable limited to pipes of this character, but may to have the slots and pins on the side of the be employed with seamless tubing or with 5 pipe opposite to the longitudinal seam or any ordinary pipe employing sections and eljoint, although this arrangement is not conbows. It is preferred toloca'te the'interlock sidered indispensable. Although this intering slot and the engaging pin directly oppo locking means is used for purposes of illussite the seam of the pipe, as by so doing the tration, I do not desire to limit myself specifseams of the several sections when the sec- 50 ieally to it, as other interlocking means may tions are united one to the other will be in be employed. alinement, furnishing a double support for the extended pipe, which support is also strengthened by the lock ofthe pin in the transverse portion of the slot, the pin bearing against the edge of the slot. The elbow illustrated is one having its divisions or segments joined so as to turn or revolve, which gives a torsional joint to the elbow as a whole fice of enabling the pipe to be turned at right angles without destroying the interlock between the elbow and the pipe-sections. The elbow shown has one end section joined bya transverse joint at right angles, while the other end is joined by a diagonal joint and one end section or thimble has a slot and the other end section or thimble a locking-pin, so that one end can be entered into a pipesection and the other end slipped over the end of a pipe-section, as usual in joining an elbow to pipe-sections.

What I claim as new, and desire to secure by Letters Patent, is

1. An elbow for pipes, consisting of intermediate sections of segmental form revolubly connected one to the other by means of interlying companion grooves and beads in the ends of the adjacent segments, a locking-section of cylindrical form revolubly attached by the same means to one of the segments and having its attached end lying in right-angle transverse relation to its longitudinal plane, in combination with a pipe united to the lockcoasse ing-section by suitable locking means, sub stantially as described.

2. An elbow for pipes consisting of intermediate sections of segmental form revolubly connected one to the other, a locking-section of cylindrical form revolubly attached to one of the segments and having its attached end lying in right-angle transverse relation to its longitudinal plane, in combination with a pipe united to the locking-section by means of a bayonet catch-lock, substantially as described.

3. An elbow for sheet-metal seamed pipes, consistingof a series of intermediate sections of segmental form revolubly connected one to the other, an end locking-section of cylindrical form revolubly attached to one of the segments and having its attached end lying in right-angle transverse relation to its longitudinal plane, in combination with a pipe united to the locking-section by means of a bayonet catch-lock located transversely opposite to the seam of the pipe, substantially as described.

4. An elbow for sheet-metal seamed pipes, consisting of a series of intermediate sections of segmental form revolu bly connected by means of interlying companion grooves and beads in the ends of the adjacent segments, an end locking-section cylindrical in form and revolubly attached by interlying companion grooves and beads to one of the segments and having its attached end lying in right-angle transverse relation to its longitudinal plane, in combination with a pipe united to the locking-section by means of a bayonet catch-lock located opposite to the seam of a pipe, substantially as described.

HERBERT K. BLYTII.

Witnesses:

SAMUEL W. BANNING, OSCAR W. BOND. 

